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House Flipping Calculator - Flip ROI, Profit & 70% Rule | ToolsInstant
🔨 Investing Tool

House Flipping Calculator - Fix-and-Flip Profit, ROI & 70% Rule Analyzer

Run the complete house flipping analysis: net profit, return on investment, annualized ROI, holding costs, and 70% rule status for any fix-and-flip deal.

📘 How It Works ⚖️ 70% Rule ⚠️ Mistakes ❓ FAQ

🔨 House Flipping Calculator

Analyze fix-and-flip profit, ROI, and 70% rule status

🏠 Purchase Price $130,000
$10K$2M
🏦 Down Payment 20.0%
0%100%
🔧 Rehab Cost $40,000
$0$500K
📆 Total Hold Time 5 months
1 mo24 mo
💰 ARV (Sale Price) $250,000
$20K$3M
📈 Loan Interest Rate 10.00%
0%20%
🤝 Agent Commission 6.0%
0%10%
🛠️ Costs & Selling Assumptions
NET PROFIT
+$50,600
66.0% ROI over 5 months · 237% annualized
💎
ROI
+66.0%
📈
Annualized ROI
+237.6%
💰
Cash Invested
$76,650
📦
All-In Cost
$180,650
🏠
Holding Costs
$6,750
⚖️
70% Rule Max Buy
$135,000
Pass
📋 Deal Summary
📦 ACQUISITION & HOLDING (Cash Out)
Down Payment
-$26,000
Purchase Closing Costs
-$3,900
Rehab Budget
-$40,000
Holding Costs (5 mo)
-$6,750
Total Cash Invested
$76,650
💵 SALE (Cash In)
Sale Price (ARV)
+$250,000
Agent Commission (6%)
-$15,000
Seller Closing Costs
-$3,750
Other Selling Costs
-$0
Pay Off Loan
-$104,000
Net Cash from Sale
$127,250
🎯 PROFIT
Net Profit
+$50,600
📊 Sale Price Sensitivity Analysis
Sale price is your biggest risk in flipping. A 10% miss on ARV cuts profit by half; 20% miss can wipe out the deal entirely. Your ARV estimate is highlighted.
ARV Net Sale Proceeds Net Profit ROI
⚠️ Disclaimer: Estimates for educational purposes only. Real flip profits depend on accurate ARV estimation (use comparable sales or a licensed appraiser), realistic rehab budgets (always add 10–20% contingency), market conditions during sale, and time on market. Profits are typically taxed as ordinary income (short-term capital gains for properties held under one year). This calculator does not model income taxes, which vary by country and circumstance. This is not financial advice — consult a real estate or tax professional.

📘 How the House Flipping Calculator Works

House flipping means buying a property, renovating it to add value, then selling for profit within a short timeframe. This calculator runs the full deal math so you can verify a flip is worth doing before you commit capital.

1
Enter the Acquisition
Input the purchase price, down payment, rehab budget, and how long you'll hold the property. The calculator computes purchase closing, loan amount, monthly holding costs (interest, tax, insurance, utilities), and total cash you'll need.
2
Set Sale Price & Costs
Enter the ARV (After Repair Value — your expected sale price), the agent commission you'll pay, and any other selling costs. These determine your net sale proceeds after the buyer's closing.
3
See the Profit Picture
Instantly see net profit, ROI, annualized ROI, all-in project cost, holding cost burn, and 70% rule status. The ARV sensitivity table shows how profit changes if your sale price misses by 10–20% in either direction.

⚖️ The 70% Rule for House Flipping

The 70% rule is the most popular quick-screen for flips. Three variations are used depending on market conditions and risk tolerance.

Conservative 65%
Low Risk
  • Max Purchase = (ARV × 0.65) - Rehab
  • $250K ARV with $40K rehab = $122.5K max purchase
  • Best for new flippers building experience
  • Best for soft or declining markets
  • Wider profit margin protects against surprises
Standard 70%
Standard
  • Max Purchase = (ARV × 0.70) - Rehab
  • $250K ARV with $40K rehab = $135K max purchase
  • The classic rule taught in flipping courses
  • Balances margin with deal availability
  • 30% margin covers profit, commission, and risk
Aggressive 75%
Higher Risk
  • Max Purchase = (ARV × 0.75) - Rehab
  • $250K ARV with $40K rehab = $147.5K max purchase
  • Used in hot markets with strong appreciation
  • For experienced flippers with reliable contractors
  • Thinner margin — leaves less room for error

📊 Key Flipping Metrics Explained

Each number tells you something different about the deal. Smart flippers track all of them together — no single metric tells the whole story.

📈
After Repair Value (ARV)
The expected sale price after renovation. This single number drives most of the calculation. Use 3–5 conservative comparable sales from the past 3–6 months — not the highest comp, not your hopes. Even a 10% ARV miss often cuts profit in half.
📦
All-In Cost
Total project cost: purchase price + closing costs + rehab + holding costs. This is your full basis in the deal. The 70% rule compares this to ARV: target all-in ≤ 70% of ARV for a comfortable margin including profit and selling costs.
💎
ROI & Annualized ROI
ROI = profit ÷ cash invested. Annualized ROI scales the return to a yearly rate, letting you compare deals of different durations. A 30% return in 4 months annualizes to roughly 130% — much stronger than 30% over a year.
⏱️
Holding Costs
Monthly burn while you own the property: loan interest, property tax, insurance, utilities, and HOA. A 6-month rehab can consume $10K–$20K in pure holding costs — often more than novice flippers expect. Every extra month of delay hurts profit.
💸
Selling Costs
Agent commission (typically 5–6%, sometimes split with buyer's agent), seller closing costs (1–2%), staging, photography, and potential price concessions to buyers. Plan for total selling costs of 7–10% of sale price.
🎯
Net Profit
The bottom line: net sale proceeds minus all-in costs minus loan payoff. Most flippers target $30K+ net profit per deal to cover risk and effort. Below $15K profit usually isn't worth the time and capital tied up.

⚠️ Common House Flipping Mistakes

Failed flips share the same handful of mistakes. Each of these can turn a profitable deal into a money pit.

📉
Overestimating ARV
The single most dangerous mistake. Optimistic ARVs disguise marginal or losing deals as winners. Use only the median of recent comparable sales, not the highest comp. Many experienced flippers add a 5% buffer to their ARV estimate as risk protection.
🛠️
Underestimating Rehab
Rehab budgets almost always exceed plan — hidden water damage, electrical issues, foundation problems, code violations, and contractor delays each add 5–15%. Always build a 15–20% contingency into your rehab budget before committing.
⏳
Ignoring Holding Costs
Every month of delay burns mortgage interest, tax, insurance, and utilities. A 3-month overrun can easily cost $4K–$10K. Use hard money judiciously — its high rate makes delays expensive. Have your contractor lined up before you close on the property.
🎨
Over-Improving for the Neighborhood
Spending $30K on a kitchen in a neighborhood where buyers expect basic finishes wastes money — buyers won't pay for upgrades above neighborhood norms. Tour 5–10 sold homes in your target ARV range to set finish expectations.
📅
Bad Timing on Sale
Listing in December or July (slow months in many markets) can add 30–60 days on market. Where possible, target a spring or early-fall listing window when buyer activity peaks. Holding through a season change adds substantial cost.
🏗️
Wrong Contractor Choice
A cheap or unreliable contractor often costs more than a quality one because of delays and rework. Get 2–3 bids, check references, verify licensing and insurance. Build a relationship with a reliable contractor before scaling your flipping operation.

🔗 Related Calculators

🔁
BRRRR Calculator
Buy-Rehab-Rent-Refinance-Repeat — keep the property instead of flipping.
🏘️
Rental Property ROI Calculator
Analyze long-term rental cash flow and total return.
🏝️
Airbnb Income Calculator
Estimate short-term rental profit and occupancy sensitivity.

❓ Frequently Asked Questions

How much profit should I make on a house flip?
Most experienced flippers target a minimum of $25,000–$30,000 net profit per deal, with $40,000+ considered solid. Below $20,000 net usually isn't worth the time, capital risk, and effort. Higher-end markets typically target $50K–$100K+ given the larger price points and risk exposure.
What is the 70% rule in house flipping?
Maximum purchase price should be 70% of ARV minus the rehab budget. So a $250,000 ARV with $40,000 rehab gives a $135,000 maximum purchase. The 30% "spread" covers your profit, holding costs, selling costs, and risk buffer. Conservative flippers use 65%; aggressive markets sometimes accept 75%.
How is ARV (After Repair Value) calculated?
Use 3–5 recent comparable sales — homes that sold within the last 3–6 months in your target neighborhood, with similar square footage, bedrooms, and finish level. Adjust for differences like extra bathrooms, garages, or lot size. The median of comparable sales is your conservative ARV. Many flippers also hire a licensed appraiser for an independent ARV report.
What is annualized ROI?
It converts your deal's return into a yearly rate so you can compare flips of different durations. A 30% return in 4 months annualizes to roughly 130%; a 50% return in 12 months is just 50% annualized. Formula: (1 + ROI)^(12 ÷ hold months) - 1. Flippers often achieve annualized ROIs above 100% on individual deals, even though each individual deal returns 20–40%.
How long does a typical house flip take?
Industry average is 4–6 months from purchase to sale closing. Best case (small cosmetic flip): 2–3 months. Realistic median (kitchen + bathroom rehab): 4–6 months. Tougher cases (full gut, structural work): 8–12+ months. Time on market for the sale typically runs 30–60 days in a normal market, longer in slow seasons or weak markets.
Should I use hard money or conventional financing for flipping?
Hard money pros: fast close (1–2 weeks), interest-only payments, often funds rehab too, less credit-focused. Cons: 10–14% rates, 1–4 points fees, 6–12 month terms. Conventional pros: 7–9% rates, longer terms, lower carrying cost. Cons: 30–60 day close, strict underwriting, harder for distressed properties. Most professional flippers use hard money for speed on distressed deals.
How is house flipping income taxed?
In the US, flipping profits are typically taxed as ordinary income, not capital gains, because the IRS considers it a business activity. If you flip multiple properties per year, you may be classified as a "dealer" and owe self-employment tax (15.3%) on top of income tax. Tax rules vary widely by country. Consult a tax professional — proper structuring can save thousands.
What rehab improvements give the best ROI?
Highest-ROI improvements are typically: paint (interior and exterior), flooring, kitchen and bathroom updates (especially if dated), curb appeal (landscaping, front door, garage door), and any obvious problems (worn carpet, broken fixtures). Avoid: pools, room additions, high-end appliances beyond neighborhood norms, expensive landscaping. The goal is broad buyer appeal, not personal taste.
How much should I budget for unexpected issues?
Always add 15–20% contingency to your rehab budget. Even experienced flippers encounter surprises: hidden water damage, electrical needing replacement, code violations, structural issues found mid-rehab. New flippers should add 25%+ contingency on their first few deals. Underbudgeting is a leading cause of flip failures.
What's the difference between flipping and BRRRR?
Flipping sells the property for a one-time profit; BRRRR keeps the property as a rental and refinances to extract capital. Flipping generates active income (taxed higher); BRRRR generates passive income (taxed lower with depreciation benefits) and builds long-term wealth. Many investors do both — flip in down markets, BRRRR in stable markets.
Can I flip houses with little money?
It's harder than gurus claim. Even with hard money financing (90–100% of purchase, sometimes including rehab), you'll need cash for closing costs, holding costs, contingency reserves, and sometimes 10% down. Plan on $30K–$50K of your own cash for a first flip, plus 6+ months living expenses since the deal may stretch. Partnerships and private money can lower the cash requirement.
How accurate is this house flipping calculator?
The math is precise for your inputs. Real-world accuracy depends on three inputs: ARV (most uncertain), rehab budget (commonly underestimated), and hold time (always longer than planned). Always run the ARV sensitivity table to see profit at lower-than-expected sale prices — that's your downside protection check. Conservative estimates lead to better deal selection.
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